"Foundations" is a song co-written by British singer-songwriter Kate Nash for her debut album Made of Bricks (2007).

It was released as the album's lead single in June 2007, her first single since signing with Fiction Records after the success of her debut single "Caroline's a Victim". On July 22 2007, Nash performed "Foundations" at 2007's T4 on the Beach in Weston-super-Mare. The single was a commercial success, ending 2007 as the year's 17th biggest-selling single in the UK. During live performances fans often hurl lemons at Kate during the line "You must think I eat so many lemons/cause I am so bitter"